Zeno-logic applications of semiconductor quantum dots

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053852· OSTI ID:21408930

Schneebeli, L; Peyghambarian, N ^[1]; Feldtmann, T; Kira, M ^[2]; Koch, S W ^[1]

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1. Optical Sciences Center, University of Arizona, Tucson, Arizona 85721 (United States)
2. Department of Physics and Material Sciences Center, Philipps-University, D-35032 Marburg (Germany)

Microscopic calculations show that CdSe-based semiconductor quantum dots with confined exciton and biexciton states are suitable candidates for Zeno-logic applications. The frequencies of the control and signal fields are chosen to guarantee very high transmission of the individual beams. If both fields are present simultaneously, they are strongly absorbed due to efficient ground-state-to-biexciton transitions. The optical Bloch equations for a three-level quantum-dot model with self-consistent light-matter coupling are solved numerically. The influence of dephasing and/or inhomogeneous dot distributions is analyzed and the conditions for satisfactory device operation are identified.

• OSTI ID: 21408930
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
BLOCH EQUATIONS
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
CONTROL
COUPLING
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EQUATIONS
EQUIPMENT
GROUND STATES
MATERIALS
MATTER
NANOSTRUCTURES
QUANTUM DOTS
RADIATIONS
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR MATERIALS
SIGNALS
TRANSMISSION
VISIBLE RADIATION